CN2287598Y

CN2287598Y - Foldable bicycle

Info

Publication number: CN2287598Y
Application number: CN97201490.XU
Authority: CN
Inventors: 许世丰
Original assignee: LONGTONGGUAN INDUSTRIAL Co Ltd
Current assignee: LONGTONGGUAN INDUSTRIAL Co Ltd
Priority date: 1997-02-04
Filing date: 1997-02-04
Publication date: 1998-08-12
Anticipated expiration: 2007-02-04

Abstract

The utility model relates to a folding bicycle provided with the main components of a general bicycle. The folding bicycle comprises a front and a back wheels, handlebars, a support frame, a seat tube, a big and a small sprockets, a chain, pedals, a bicycle frame, a front and a back braking handles, etc. The utility model is characterized in that the middle part of the support frame of the handlebars and a frame at the front section of the bicycle frame are provided with folding devices; the support frame of the handlebars and an auxiliary tube are provided with fast locks; each of the pedals is in a structure which can be folded inwards to the inner side of a crank, and a rear seat frame is connected with the lower end of the bicycle frame by a movable shaft. The rear seat frame can be moved to the direction of the bicycle frame as long as the bicycle frame is lifted. The utility model can be assembled rapidly and simply and can be locked firmly in a normal operation state.

Description

Folding Bicycle

The utility model relates to a kind of collapsible vehicle, especially relevant for a kind of firm in structure durable, and can simply be folded into small and exquisite volume rapidly, so that the Folding Bicycle that the user carries and deposits.

The main design goal of Folding Bicycle, be to make the user rapidly and easily bicycle folding to be become small and exquisite volume, so that deposit and carry, in addition, difficulty or ease during design, the safety that drives and comfortable and practicality and cost etc. all also design the key factor of required consideration for Folding Bicycle.

Understand just as the personage who is familiar with this boundary's technology, above-mentioned various conditions often are can't simultaneously and deposit relatively, for example, Folding Bicycle is a purpose of reaching the small and exquisite volume in folding back, and its designed structure often undermines its impregnability and practicality, and easily causes the inconvenient and dangerous of use, and as for taking into account the firm and practicality of its structure, folding step will be very complicated, thereby the inconvenience that causes assembling and fold, and similar restriction is also arranged on other condition.In addition, the seat pipe of existing Folding Bicycle, the volume after the configuration mode of pipe support etc. makes it folding still can't reach gratifying degree, and remains to be improved.

Common Folding Bicycle by above statement, suffices to show that still to exist many shortcomings.In view of this, this creator reaches with the many years of experience at mechanical field and is engaged in the experience that the Folding Bicycle manufacturing is sold for a long time, design this kind through long-time research and be easy to carry and deposit, folding and Folding Bicycle that assembling is all very fast, safe and durable.

The utility model is the shortcoming at above-mentioned known Folding Bicycle, do improvement completely, the utility model Folding Bicycle has the collapsible frame-saw of low profile, this frame-saw has and wheel and wheel stand double altitudes and thickness haply, because the utility model Folding Bicycle is provided with folder and quick locking structure in suitable position, therefore whole elements all is foldable in the frame-saw after folding, and be retained in the frame-saw scope after folding, and can assemble simply rapidly, and be latched in normal operating state securely.

Of the present utility model being characterised in that, it has the major part and the device of Regular Bicycle, and the frame-saw of part and vehicle frame leading portion is provided with folder in the middle of the handle bracing frame, uses for folding; Handle bracing frame and seat pipe have fast lock and use for flexible; Stretcher be one can in receive to the structure of crank inboard; Back mounting then is connected with the vehicle frame lower end with a movable axis, mentions vehicle frame and just can make back mounting dislocation in the below of vehicle frame; Vehicle frame has the collapsible frame-saw of low profile, this frame-saw has and wheel and wheel stand double altitudes and thickness haply, the whole element of bicycle all is foldable in the frame-saw after folding, and be retained in the frame-saw scope of folding back, and can assemble simply rapidly, and be latched in normal operating state securely; Back mounting front end is to be connected with the vehicle frame lower end with a movable axis, and is held in vehicle frame with cushion, mentions vehicle frame, just can make back mounting dislocation in the below of vehicle frame; On the back mounting and be provided with mobile steamboat; There is a fastener at the vehicle frame rear, can be buckled in the back mounting; Back mounting also is provided with stop rod; The handle bracing frame, nearly upper end partly is provided with ridge portion, vehicle frame right side front end is provided with folder, after the handle bracing frame is folding, this ridge portion can be pushed in the folder, with the fixed handle bracing frame in frame sides; Vehicle frame nearby axletree side is provided with fastener, when bicycle folding, this fastener can be buckled on the cross bar of back stand; The minor sprocket next door is provided with chain and adjusts guide wheel, this chain is adjusted the elasticity that guide wheel can be adjusted chain with the change at chain center, can prevent that the center of chain shortens and causes chain loose or dislocation situation to take place when the back mounting dislocation of Folding Bicycle during in the below of vehicle frame; The position of wherein fast lock and folder can be according to folding needs in the suitable position setting of Folding Bicycle.

In order further to understand characteristics of the present utility model and technology contents, see also the following drawings and detailed description, wherein:

Fig. 1 is the utility model Folding Bicycle constructional drawing.

Figure 1A is the flexible quick locking structure figure that partly uses of the utility model.

Figure 1B is the folder constructional drawing of the utility model vehicle frame right side front end.

Fig. 1 C is a stretcher constructional drawing of the present utility model.

Fig. 1 D is the folding folder constructional drawing that partly uses of the utility model.

Fig. 2 is the folding figure of the back mounting of the utility model Folding Bicycle.

Fig. 2 to Fig. 5 is the folding step instruction diagram of the utility model Folding Bicycle.

Fig. 3 A be the utility model vehicle frame nearby the fastener of wheel shaft side be buckled in the constructional drawing of cross bar of back stand.

At first see also Fig. 1, it is the constructional drawing for the utility model Folding Bicycle, and the utility model Folding Bicycle has the primary clustering and the device of Regular Bicycle, wherein comprise front vehicle wheel 11, rear wheel 12, handle 13, handle bracing frame 14, seat pipe 15, the driving device that hinge wheel 16 and minor sprocket 17 and chain 18 constitute, stretcher 19, vehicle frame 20, front and back brake handgrip 21, change-speed box handle 24, cut brake 26, members such as back brake 27 and seat 28.

Fast lock 32 of the present utility model is arranged at the stage casing part of handle bracing frame 14, fast lock 34 is arranged at the junction of seat pipe 15 and vehicle frame 20, it is to do flexible using for handle bracing frame 14 and seat pipe 15 respectively, its structure sees also Figure 1A, the structure of

lock

32,34 comprises spanner 321 soon, pad 322, set collar 323 and knob 324.The set collar 323 of fast lock 32 is to be sheathed on the main body of Collapsible structure, and spanner 321 has screw rod and cam structure, and the screw rod of spanner 321 passes the hole on pad 322 and the set collar 323 in regular turn, and knob 324 then is connected to the end of the screw rod of spanner 321.When desire is adjusted handle bracing frame 14 collapsing lengths, spanner 321 can be pulled outward, this moment, the main body of Collapsible structure was in not pressured state, to be adjusted to the appropriate location, again with spanner 321 toward interior pressures, by the cam structure of spanner 321 main body is in the oppression state, just finish fixing.

The handle bracing frame 14 nearly upper ends of the utility model Folding Bicycle partly are provided with ridge portion 141, vehicle frame 20 right side front ends are provided with folder 29, after handle bracing frame 14 folds, this ridge portion 141 can be pushed in the folder 29, with the side of fixed handle supporting framework 14 in vehicle frame 20, detailed structure sees also Figure 1B.

The stretcher 19 of the utility model foldable bicycle sees also Fig. 1 C, and Fig. 1 C-1 is folding preceding stretcher constructional drawing, and the structure of this stretcher 19 comprises crank 191, T type housing 192, elements such as portable plate 193 and spring 194.One side of above-mentioned portable plate 193, run through and link a movable axis 195, this movable axis 195 is fixed on the T type housing 192,194 on spring is placed on the movable axis 195, make portable plate 193 be subjected to the elastic force of spring 194, and be close proximity on the T type housing 192, when stretcher 19 folds, but the application of force makes portable plate 193 cross crank 191, as Fig. 1 C-2 and Fig. 1 C-3, so structure design, make Collapsible bicycle when folding, make in stretcher 19 energy and receive,, and littler volume can be arranged as Fig. 1 C-4 to the inboard of crank 191.

Folder 31 of the present utility model and 33 is to be arranged at the leading portion of the stage casing of handle bracing frame 14 and vehicle frame 20 respectively for folding usefulness, and its detailed structure is please referring to Fig. 1 D, Fig. 1 D-1 be folder 31 folding before, Fig. 1 D-2 is folder 31 scheme drawing after folding.The structure of this folder 31 (structure of folder 33 also together) comprises that vertical tube seat 311, following vertical tube seat 312, tingle 313 reach fixedly swing arm 314.When desire during with

folder

31,33 dismounting, fixedly swing arm 314 rotations get loose, and tingle 313 are got from the last vertical tube seat 311 and the flange of vertical tube seat 312 down again, just can will go up vertical tube seat 311 and vertical tube seat 312 is folding down; Otherwise, will go up vertical tube seat 311 and down during 312 assemblings of vertical tube seat as desire, the flange of last vertical tube seat 311 is adjacent to down the flange of vertical tube seat 322, succeeded by tingle 313 clamping two flanges, fixedly swing arm 314 screws and gets final product again.

The back mounting 22 of the utility model foldable bicycle, its front end is to be connected with vehicle frame 20 lower ends with a movable axis 221, and be held in vehicle frame 20 with cushion 222, by structure design so, make the utility model Folding Bicycle, when folding, only need mention vehicle frame 20, just can make back mounting 22, easily and rapidly dislocation is in the below of vehicle frame 20, and the volume that can make bicycle contracts to minimum, as shown in Figure 2.Because when back mounting 22 dislocations during in the below of vehicle frame 20, the center of chain 18 can change, for the center because of chain 18 of preventing shorten cause chain 18 loose or dislocations situation take place, be provided with chain in minor sprocket 17 next doors and adjust guide wheel 25, this chain is adjusted guide wheel 25 can change the elasticity of adjusting chain 18 with chain 18 centers.Back mounting 22 also is provided with mobile front-wheel 224 and mobile trailing wheel 225, slips on the ground to move with the bicycle after convenient the folding and uses.There is a fastener 23 at the rear of vehicle frame 20, after the folding cycle assembling finishes, this fastener 23 can be buckled in back mounting 22, so that back mounting 22 be able to vehicle frame 20 in conjunction with firmly, can not rock, and in using, vehicle frame 20 be mentioned, back mounting 22 also can not get loose, cause the below of dislocation vehicle frame 20, and cause the inconvenience of travelling, even cause danger.When stopping, after fastener 23 can being got loose, vehicle frame 20 mentioned make back mounting 22 dislocations in the bottom of vehicle frame 20, just can temporarily stop.Also can utilize mounting 22 nearly rear wheel centers, back, the stop rod 223 of setting stops, and the fastener 23 that need not get loose.

The folding consecutive steps of the utility model Folding Bicycle is shown among Fig. 1 to Fig. 5 respectively in regular turn.Fig. 1 is the folding preceding constructional drawing of the utility model Folding Bicycle, when not using or for easy to carry, can be folded, and makes the bicycle reduced volume, structure such as Fig. 5 after the utility model is folding.

First step is earlier car to be stopped when folding, front vehicle wheel 11 is turned to the left side (in order to avoid rear wheel 12 bumps against front vehicle wheel 11) gently, and the fastener 23 that will be buckled in back mounting 22 again gets loose, and vehicle frame 20 is mentioned, make back mounting 22 dislocations in the below of vehicle frame 20, as shown in Figure 2.After finishing this step, roll over earlier from simple part again, can fold front vehicle wheel 11 earlier partly as third step, fixedly swing arm 334 rotations with folder 33 earlier get loose, and with the leading portion of vehicle frame 20, fold into hinge wheel 16 sides of bicycle, to be positioned at vehicle frame 20 fastener 35 of 11 sides of wheel nearby, be buckled on the cross bar 226 of back mounting 22,, can consult Fig. 3 and Fig. 3 A to fix it.

Folding third step, then be to get loose with being positioned at the fixedly swing arm rotation of handle bracing frame 14 with the folder 31 of vehicle frame 20 junctions, handle bracing frame 14 is folded to front vehicle wheel 11 sides, handle bracing frame 14 nearly upper ends partly, and be provided with a ridge portion 141, when the handle bracing frame is folding, can be with this protrusion 141, push the folder 29 that is positioned at vehicle frame 20 right side front ends, with closely fixing, as shown in Figure 4 (because folder 29 is the opposite side that is positioned at vehicle frame in figure four, thus can't see, can be referring to Figure 1B).

The 4th folding step, it also is last step, the spanner 321 that will be positioned at fast lock 34 structures at seat pipe 15 places is pulled outward, and transfer to seat pipe 15 minimum, make the withstanding part 227 of conflict back, the bottom mounting 22 of seat pipe 15, contract in stretcher 19 being folded again, the utility model is promptly finished folding, the utility model after folding can be held position, vehicle frame 20 stage casing this moment as shown in Figure 5 to carry the utility model to arbitrary place.Because the utility model is to hold seat pipe 15 with withstanding part 227, be positioned at the below of vehicle frame 20 with fixing back mounting 22, ridge portion 141 with the 14 nearly upper end part settings of handle bracing frame, push the folder 29 that is positioned at vehicle frame 20 right side front ends, and to be positioned at vehicle frame 20 fastener 35 of 11 sides of wheel nearby, be buckled on the cross bar 226 of back stand 22, so the structure of the utility model after folding is very firm, moves very convenient.As desire assembling the utility model, need only getting final product according to above-mentioned reverse procedure row.

Above-mentioned a kind of in the mode of folding and assembling the utility model Folding Bicycle, because the utility model is structure design cleverly, folding and the stack-mounted step is very many, so that the user not necessarily wants fully just can to finish according to above-mentioned step is of the present utility model folding and assemble.

In sum, the utility model Folding Bicycle improves the shortcoming of prior folding formula bicycle with the structure design of clever thought, and not only be easy to carry and deposit, and folding and assembling is all very fast, safe and durable.

Claims

1. Folding Bicycle, it has the major part and the device of Regular Bicycle, comprise the assemblies such as driving device, stretcher, vehicle frame and front and back brake handgrip that front vehicle wheel, rear wheel, handle, handle bracing frame, seat pipe, hinge wheel and minor sprocket and chain constitute, it is characterized in that, the frame-saw of part and vehicle frame leading portion in the middle of the handle bracing frame, be provided with folder, use for folding; Handle bracing frame and seat pipe have fast lock and use for flexible; Stretcher be one can in receive to the structure of crank inboard, back mounting is connected with the vehicle frame lower end with a movable axis, just can make back mounting dislocation in the below of vehicle frame as long as vehicle frame mentioned; Vehicle frame has the collapsible frame-saw of low profile, this frame-saw has and wheel and wheel stand double altitudes and thickness haply, the whole element of bicycle all is foldable in the frame-saw after folding, and be retained in the frame-saw scope of folding back, and can assemble simply rapidly, and be latched in normal operating state securely.

2. by the described Folding Bicycle of claim 1, it is characterized in that wherein back mounting front end is to be connected with the vehicle frame lower end with a movable axis, and is held in vehicle frame with cushion, mentions vehicle frame, just can make back mounting dislocation in the below of vehicle frame; On the back mounting and be provided with mobile steamboat; There is a fastener at the vehicle frame rear, can be buckled in the back mounting; Back mounting also is provided with stop rod.

3. by the described Folding Bicycle of claim 1, it is characterized in that, wherein the hand bracing frame, nearly upper end partly is provided with ridge portion, and vehicle frame right side front end is provided with folder, after the handle bracing frame is folding, this ridge portion can be pushed in the folder, with the fixed handle bracing frame in frame sides.

4. by the described Folding Bicycle of claim 1, it is characterized in that, wherein vehicle frame nearby the axletree side be provided with fastener, when bicycle folding, this fastener can be buckled on the cross bar of back stand.

5. by the described Folding Bicycle of claim 1, it is characterized in that, wherein the minor sprocket next door is provided with chain and adjusts guide wheel, this chain is adjusted the elasticity that guide wheel can be adjusted chain with the change at chain center, can prevent that the center of chain shortens and causes chain loose or dislocation situation to take place when the back mounting dislocation of Folding Bicycle during in the below of vehicle frame.